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From FDA reports: drug interactions between Atenolol, Chlorothiazide

This is a study of Atenolol, Chlorothiazide drug interactions. The study is created by eHealthMe based on reports of 65 people who take the same drugs and have drug interactionsfrom FDA.

On Jul, 14, 2014: 65 people who reported to have interactions when taking Atenolol, Chlorothiazide are studied

Trend of Atenolol, Chlorothiazide's drug interactions, side effects, and effectiveness reports (321521)

Information of the patient in this study:

Gender: female

Conditions: Hypertension

Drugs taking:
- Atenolol
- Chlorothiazide

Drug interactions have: Hypotension

eHealthMe real world results:

For people in general (regardless of gender or age):

Comparison with this patient's adverse outcomes:

InteractionNumber of reports
Hypotension (abnormally low blood pressure)5 (7.69%)

Most common interactions experienced by people in the use of Atenolol, Chlorothiazide:

InteractionNumber of reports
Hypokalaemia (low potassium)33
Renal Failure (kidney dysfunction)33
Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)30
Syncope (loss of consciousness with an inability to maintain postural tone)27
Unevaluable Event20

Most common interactions experienced by people in long term use of Atenolol, Chlorothiazide:

InteractionNumber of reports
Hypokalaemia (low potassium)1
Syncope (loss of consciousness with an inability to maintain postural tone)1
Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)1
Dehydration (dryness resulting from the removal of water)1
Neutrophil Count Decreased (less than normal number of neutrophil a type of blood cell)1
Bone Pain1

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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NOTE: The study is based on active ingredients. Other drugs that have the same active ingredients are also considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

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